Last year, I was a Windows Vista 32-bit user and hadn't used an antivirus or antispyware solution, except Windows Defender and my laptop had not been infected by a virus. I use Microsoft Security Essentials on my Windows 7 64-bit, which this antivirus does handle viruses, trojans and spyware very well for being "free"!
How did you know that your laptop had not been infected by any virus? Have you check it with other AV?
Yes. But with ESET Online Scanner on Vista.
My Computer
At a glance
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